diff --git a/generator/pygen/pygen.cpp b/generator/pygen/pygen.cpp
index ac7fa2d10e..0c8715e876 100644
--- a/generator/pygen/pygen.cpp
+++ b/generator/pygen/pygen.cpp
@@ -348,6 +348,7 @@ BOOST_PYTHON_MODULE(pygen)
         .value("v7", version::Format::v7)
         .value("v8", version::Format::v8)
         .value("v9", version::Format::v9)
+        .value("v10", version::Format::v10)
         .value("last", version::Format::lastFormat);
 
     bp::class_<FilesContainerR::TagInfo>("SectionInfo", bp::no_init)
diff --git a/tools/python/mwm/mwm_python.py b/tools/python/mwm/mwm_python.py
index c8b1d57c8c..d81a68685d 100644
--- a/tools/python/mwm/mwm_python.py
+++ b/tools/python/mwm/mwm_python.py
@@ -34,7 +34,8 @@ class MwmPython(mi.Mwm):
         self.map_type = mi.MapType(read_varint(self.file))
 
         self.version_ = self._read_version()
-        self.metadata_offsets = self._read_metadata_offsets()
+        if self.version_.format < 10 :
+          self.metadata_offsets = self._read_metadata_offsets()
 
     def version(self) -> mi.MwmVersion:
         return self.version_
@@ -88,6 +89,7 @@ class MwmPython(mi.Mwm):
         return tags
 
     def _read_metadata_offsets(self) -> Dict[int, int]:
+        assert self.version_.format < 10
         self.seek_tag("metaidx")
         tag_info = self.get_tag("metaidx")
         current = 0